1. Anything that stimulates or normalizes the immune system, or other systems such that the body is functioning at its best.
Please understand that no one can protect from everything out there. Life isn't one of protecting from everything, it is about overcoming what we can and succumbing to what we can't overcome.
2. Yes, support the immune system lots of vitamin D3 just to make sure they get a good vitamin and don't let them exchange masks with other kids because they think they're cuter than theirs are LOL might want to have a talk with them about that.
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